Fifty years after his lynching helped usher in the civil rights movement in the United States, the body of African-American teenager Emmett Till was re-buried Saturday in a Chicago area cemetery.

The Federal Bureau of Investigation exhumed the body Wednesday in hopes an autopsy can shed new light on the 1955 crime.

Fourteen-year-old Emmett Till was visiting relatives in the southern U.S. state of Mississippi when he was dragged from his bed, beaten and murdered for allegedly whistling at a white woman. Two white men were tried for his murder but were acquitted. Years later, the men admitted in a magazine article to killing the black teenager.

Both men are now dead, but authorities hope autopsy results will determine if others were involved in the crime, and possibly lead to their prosecution.